Chusetts



(No Model.) 2 Sheets-Sheet 1 H. H. CUMMINGS & L. 0. DION. MACHINE FOR SETTING TAGK RIVETS.

No. 364,578. y Patented June 7, 1887.

2 Sheets-Sheet 2. H. H. CUMMINGS & L. 0. DION.

(No Model.)

MACHINE FOR SETTING TACK RIVETS.

No. 364,578. Patented June 7, 1887.

Wm 5555i PETERS. mmm n m. Wuhlnflon. n. c.

UNITE STATES PATENT tries.

HENRY H. OUMMIN GS, OF MALDEN, AND LEON O. DION, OF N ATIOK, MASSA- CHUSETTS; SAID'OUMMINGS ASSIGNOR TO SAID DION.

MACHINE FOR SETTING TACK-RIVETS.

SPECIFICATION forming part of Letters Patent No. 364,578, dated June '7, 1887. Application tiled September 20, 1886. Serial No. 214,005. (No model.)

To all whom it may concern.-

Be it known that we, HENRY H. CUMMINGS, of Malden, and LEON O. DION, of Natiek, in the county of Middlesex and State of Massachusetts, citizens of the United States, have invented a new and useful Improvement in Devices for Setting Tack-Rivets, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification in explainingits nature.

The invention is especially designed to set the rivet or fastener described in said Dions application for Letters Patent of the United States,'filed June 15, 1886, Serial No. 205, 240. The rivet or fastening device described in said application comprises two members, which are duplicates of each other, and each of which comprises a large head having a prong extend- 2o ing therefrom at one side of the center, provided with a elinchingpoint, and also with a prong-turning die or cavity arranged preferably centrally in the head. The mechanism or device comprises in substance two devices or holders, each of which is adapted to receive and hold by its head one member of the fastening, and a guiding and holding arm adapted to be used for locating the prong of each member of the fastening, so that it shall come subcavity in the other member. They also serve the purpose of holding the members in place' in the holders while the holders are being brought together to set the fastening. It further comprises devices or jaws for holding the material which is to be united by the fastening, and which are placed in close relation to the fastener holding and setting device.

Referring to the drawings, Figure 1 is aview 0 in side elevation. Fig. 2 is a view in section upon the line m .00 of Fig. 1. Fig. 3 is a view in section on the line y y of Fig. 1. Fig. 4 is a detail view illustrating the movement and operation of one prong-centeringarm. Fig.

5 5 is a detail view illustrating the position of various parts at the completion of their operation. Fig. 6 illustrates the relation which the two prong-centering arms bear to each other when closed. Fig. 7 is a plan view, enlarged,

of the end of one prong-centering arm. Fig.

8 is a View showing the two members of the fastening secured to each other, but without the material to represent the relation which the prongs bear to each other after they have been turned or upset.

A represents the frame of the machine. It has two brackets, a a, each of which has a dles a a". Each spindle has a cavity or recess, a in or at its head, of sufficient size to receive the head of one member of the fastening. These spindles and fastener-holders are given movements toward and from each other by means of the bent levers a, which are pivoted, respectively, at the point a a and the screw-rod a", to the inner end of which the ends of thelevers a are connected. This screwrod to is moved by the screw a either away from the holders (L to throw them or move them toward each other, or in the reverse direction to separate them.

Attached to the brackets a is an arm, 13, which carries the work-support b. This worksupport is provided with an adjustment upon the arm a by means of the slot 1) and screw If. Above the worksupport is a presser or jaw, b",- which is moved toward the work-support b by means of the spring bflwhieh bears against the lever D which is pivoted at b, to the end of which the presser I) is secured. This lever b has a thumbpiece or arm, b whereby the presser b is adapted to helifted from the support I), or from the work to release it. There is attached to each of the heads of the spindles or blocks a a" a device for locating or centering each member of the fastening, and for holding it to its respective spindle-head until theprongs have entered the material which the fastenings unite,when they are withdrawn to allow the prongs to enter the die or prongturning spaces or recesses of the heads, and the heads to be pressed firmly against the material. These centering and locating devices comprise two spring-arms, D D, which are fastened, respectively, to the spindles a a" by a spring or yielding support or arm, (I. The arms 1) D are pivoted to the ends of their supports (1, so as to swing laterally to and from the head of their respective spindles, and they are each provided with a projection, d, having a prong-receiving notch, d". The notches are arranged to center the prong of each memhole, a which receives, respectively, the spin-,

ber of the fastening over the die or prong-turning cavity of the other fastening. The arms D D also have the prong-turning dies or cavities (1 upon their opposing or outer surfaces and at or adjacent to the ends of the notches d These prong-turning cavities or dies are for the purpose of enabling the use of tacks which are'unprovided with prong-turning cavities or dies in the under surface of their heads, and when the arms D D are thus used they are held in position upon their respective tacksnpports until the prongs of the tacks have pierced the material which they are to unite and their pointed ends have come in contact, respectively, with the dies (1", and have been moved sufficientl y to turn the points and cause them to reenter the material, when the plates D D are removed, and the movement of the supports toward each other continues until the tacks have been well set into the material. The continued movement of the tacks of course brings a turned point in contact with the under surface of the head of each tack; but as the prongs are turned the under surface of the head of each tack need not then have a die or cavity, as a flat surface answers equally well for this continued setting of the fastenings. There is also attached to each arm d another arm, 0, which has at its end a sleeve, c. This sleeve extends a trifle beyond the head of its respective spindle when at rest, and forms the cavity or recess for holding the head of the fastening. It may have a yielding or sliding movement upon the spindle during the movement of the members of the fastening toward each other, and of course it is necessary that theprong centering and fastening holder-plates D D be movable vertically with their vertical spindles a a. It is also necessary that they should be withdrawn from the prongs of the fastening after the prongs have entered the material or work which they are to secure, but before the under surface of the heads thereof come in contact with it, and they are therefore provided with the horizontal movement to and from the heads of the spindles above indicated.

In operation the two members of the fastening are inserted in their respective cavities, their heads resting against the ends or heads of the spindles a a. The prong-centering plates D D are then moved until their notches engage the shanks of the fastenings and locate them, so that the prong of one fastening is opposite or in'line with the prong-turning die or cavity of the other. The work is then placed upon the work-support b, the presser b permitted to close thereon, the spindles a a are moved toward each other, the prongs enter the material or work from opposite sides, the prong centering plates D l) are moved away,the spindles continue their closing movement, the prongs enter their respective turning cavities, and the pressure is continued until the movements of the two members of the fastening are firmly pressed against the surface of the material or work. The spindles a a are then separated, the presser-foot I) lifted, and the work removed.

Having thus fully described our invention, we claim and desire to sccu re by Letters Patent of the United States- 1. The combination, in a machine for setting fastenings, consisting of two members, each having a head provided with a prong or prongturning die or cavity, of two movable supports, each of which is adapted to receive and hold by its head one of the members of said fastening, and a plate or arm for locating and holding each fastening to its said support and for centering their prongs that they may register, respectively, with the die or prong'tnrning cavity in the head of each member of the fastening, and devices for moving said supports toward and from each other, substantially as described.

2. The combination of the two members or spindles a a, adapted to have movements to and from each other imparted to them, the movable fastening-holding and prong-centering plates D D, and thejaws or work-holders b b", substantially as described.

3. The combination of the members or spindles a a" of each fastening device, adapted to hold a.mcmber of a fastening thereto, with the lovers a, screw-rod a", and nut a", substantially as described.

4. The combination, in a machine for setting fastenings,consistingoftwo members, each having a head and a prong extending therefrom, of two movable supports, each of which is adapted to receive and hold by its head one of the members of said fastening, and a plate or arm for locking or holding each fastening to its said support and for centering their prongs that they may register with the die or prongturning cavities, the die or prong-turning cavi ties (1, formed in each plate or arm, and devices for moving said supports toward and from each other, substantially as described.

HENRY H. CUMMINGS. LEON O. DION.

Witnesses:

F. F. RAYMOND, 2d, FRED. B. DOLAN. 

